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OSG Spiral Flute Tap: 5/16"-24 UNF, H3 / 2B-3B, 3 Flute, Bottoming Chamfer - General Purpose Spiral-Flute Taps
OSGGeneral Purpose Spiral-Flute Taps

OSG Spiral Flute Tap: 5/16"-24 UNF, H3 / 2B-3B, 3 Flute, Bottoming Chamfer

The OSG Spiral Flute Tap (5/16"-24 UNF) is a general-purpose tap with a bottoming chamfer, 3 flutes, and H3 / 2B-3B tolerance, made from high-speed steel (MPN 1430700). 3G Electric interprets demand and sources this…

SKU 3G-OTH-230789

Brand
OSG
Item
Spiral Flute Tap: 5/16"-24 UNF, H3 / 2B-3B, 3 Flute, Bottoming Chamfer
Category
General Purpose Spiral-Flute Taps
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

OSG
Manufacturer Part Number
1430700
Type
H3 / 2B-3B, Bottoming Chamfer, High Speed Steel
Flute
3

Technical Documents

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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Flute Tap (5/16"-24 UNF) is a general-purpose tap with a bottoming chamfer, 3 flutes, and H3 / 2B-3B tolerance, made from high-speed steel (MPN 1430700). 3G Electric interprets demand and sources this genuine industrial tool across 14 departments, with specialist depth in cutting tools and controls.

Frequently Asked Questions

What is the OSG spiral flute tap 5/16-24 UNF used for?

This OSG spiral flute tap is used for threading blind holes in materials such as steel and aluminum. Its spiral flute design pulls chips upward, preventing clogging. The bottoming chamfer allows threading close to the hole bottom, making it ideal for general-purpose tapping in manufacturing and maintenance applications.

What are the specifications of the OSG spiral flute tap 5/16-24 UNF?

This OSG tap has a 5/16-24 UNF thread size, H3 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer. It is made of high-speed steel. The manufacturer part number is 1430700. These specs ensure precise threading for unified fine threads in blind holes.

Where to buy OSG spiral flute tap 5/16-24 UNF worldwide?

You can source the OSG spiral flute tap 5/16-24 UNF worldwide through 3G Electric. We handle full logistics, customs clearance, and delivery to your location. As a global industrial distributor, we provide this tap and other OSG tooling to procurement teams and engineers anywhere.

How to select the correct OSG spiral flute tap for blind holes?

For blind holes, choose a spiral flute tap with a bottoming chamfer, like this OSG 5/16-24 UNF model. The spiral flutes evacuate chips upward, preventing breakage. Ensure the tap tolerance (H3 / 2B-3B) matches your thread class. Use proper cutting fluid and speed for the workpiece material.

Used in

Common applications for OSG
Automotive engine block production — OSG micro drill bits for oil gallery and coolant passage drilling in cast iron
Medical device manufacturing — OSG micro drill bits for drilling bone screw pilot holes in stainless steel implants
Aerospace component machining — OSG micro drill bits for fastener holes in titanium alloy structural parts
Mold and die making — OSG micro drill bits for cooling channel drilling in hardened tool steel (HRC 45-50)
Electronics enclosure fabrication — OSG micro drill bits for precision holes in aluminum alloy housings (with appropriate coating selection)
General engineering job shops — OSG micro drill bits for small-diameter hole drilling in mild steel and alloy steel parts

OSG Products

3G Electric supplies OSG general purpose spiral-flute taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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General purpose spiral-flute tap for threading blind holes. The spiral flute design evacuates chips upward, preventing clogging. Bottoming chamfer allows threading close to the hole bottom. Made from high-speed steel with H3 / 2B-3B tolerance class and 3 flutes
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General purpose spiral-flute tap for threading blind holes. The spiral flute design evacuates chips upward, preventing clogging. Bottoming chamfer allows threading close to the hole bottom. Made from high-speed steel with H3 / 2B-3B tolerance class and 3 flutes
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General purpose spiral-flute tap for threading blind holes. Bottoming chamfer design allows threading close to hole bottom. Spiral flute lifts chips upward, reducing clogging. Made from high-speed steel with H3 / 2B-3B tolerance. Suitable for steel and aluminum
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General purpose spiral-flute tap for threading blind holes. Bottoming chamfer design allows threading close to hole bottom. Spiral flute lifts chips upward, reducing clogging. Made from high-speed steel with H3 / 2B-3B tolerance. Suitable for steel and aluminum
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General purpose spiral-flute tap for 1/4"-20 UNC threads. Made of high-speed steel with a bottoming chamfer and 3 flutes. Tolerance H3 / 2B-3B. Suitable for threading blind holes in steel and aluminum, with spiral flute design to evacuate chips upward
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General purpose spiral-flute tap for 1/4"-20 UNC threads. Made of high-speed steel with a bottoming chamfer and 3 flutes. Tolerance H3 / 2B-3B. Suitable for threading blind holes in steel and aluminum, with spiral flute design to evacuate chips upward
OSG Spiral Flute Tap: #10-24 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 1413300)
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